Amazing, thanks. I just couldn't find the documentation to prove it
one way or the other. I just didn't guess that anything would be
different by default!
Much appreciated,
Tim
On Apr 25, 4:28 pm, Alex Gaynor <alex.gay...@gmail.com> wrote:
> On Sat, Apr 25, 2009 at 6:26 PM, Tim Valenta
> <tonightslasts...@gmail.com>wrote:
>
>
>
>
>
> > Hello all. I tried the IRC, but it's too chaotic and not enough
> > people take you seriously :)
>
> > Very very abbreviated example code:
>
> > class Person(models.Model):
> > parents = models.ManyToManyField('self', related_name='children')
>
> > Now, the exact relationship is just an example, but it demonstrates my
> > problem.
>
> > Two things happen which don't seem to be normal. By "normal", I mean
> > m2m relationships that relate to other models, and not "self".
>
> > 1) using the admin site, I make Persons A and B. A will be a parent,
> > and B will be a child. So, I use the admin site to change B,
> > selecting A as a parent. But now when I go to A's change form, it
> > lists B in its selected 'parents' widget. That's completely contrary
> > to my previous experience with the m2m relationship. Shouldn't A only
> > list B when I access "children.all()" from A?
>
> > 2) But then that leads me to the second oddity. From the shell:
> > >>> personA = Person.objects.get(pk=1)
> > >>> personA.children.all()
> > AttributeError: 'Person' object has no attribute 'children'
>
> > I've been practically cursing my laptop as I've been battling this
> > issue. None of my other manytomany relationships (where models relate
> > to *other* models, not to "self") on my site suffer from this problem.
>
> > Any direction at all would be immensely appreciated.
>
> > I'm using the latest django SVN update, Python 2.5.4, MySQL.
>
> > Thanks,
> > Tim
>
> The issue is by default m2m relationships are symmetrical, you can change
> this
> though:http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.mod...
>
> Alex
>
> --
> "I disapprove of what you say, but I will defend to the death your right to
> say it." --Voltaire
> "The people's good is the highest law."--Cicero
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